Glucose, 24-Hour Urinary Excretion (Total)
This test measures the total amount of glucose (sugar) excreted in your urine over a 24-hour period. It helps assess how well your body is handling glucose metabolism, often linked to conditions like diabetes.
["This test helps doctors evaluate long-term glucose control and identify urinary glucose loss, which may signal diabetes or other metabolic issues."]
Key facts at a glance
- LOINC
- 40045-7
- Short code
- Glucose 2D p chal SerPl-mCnc
- Synonyms
- Glucose 2D p chal SerPl-mCnc
- Category
- glucose
- Sample
- serum
- Container
- Red-top tube (SST)
- Units
- N/A
- Ref low
- 70
- Ref high
- 100
- Critical range
- 50 N/A – 400 N/A
- Fasting
- true
- Population
- adult
- Sex
- all
- Age range
- 18–65 years
- CPT
- 82947
- SNOMED
- 260395008
- Specimen volume
- 5 mL
- Stability
- Room temperature: 4h, Refrigerated: 24h, Frozen: 7d
- Hemolysis max
- 500
- Lipemia max
- 1000
- Icterus max
- 500
- TAT
- 4–24 hours
- Order
- routine
Why This Test Is Done
Your doctor may order this test if they suspect you have diabetes or prediabetes, or if you experience symptoms like frequent urination, excessive thirst, or unexplained weight changes. It can also help monitor kidney function or check for conditions like glycosuria (glucose in urine) that may not be detected by blood tests alone.
What to Expect Before the Test
You’ll need to collect all urine for a full 24-hour period, typically starting after you urinate in the morning of day one. Store the urine in a clean container, keeping it refrigerated if possible. Bring all collected urine to your lab appointment.
How the Test Works
The test measures the total glucose present in your urine over the 24-hour period. The lab analyzes the combined sample to determine the amount of glucose excreted, which reflects how much glucose your body is processing and eliminating.
What the Results Mean
Results are interpreted based on the total glucose excreted, not individual measurements. High levels may indicate diabetes or other metabolic disorders, while normal results suggest your body handles glucose efficiently. Your doctor will discuss these results with you in context of your health.
Reference range
Fasting: 70-100 mg/dLN/A
Fasting for 8-12 hours required. Water is permitted. Avoid chewing gum and smoking before the test.
Clinical interpretation
How abnormal results are interpreted and what conditions they suggest.
Elevated urinary glucose can signal diabetes, where the body struggles to regulate blood sugar properly. It may also indicate kidney issues or other metabolic conditions. Regular monitoring helps manage these conditions and prevent complications like nerve damage or kidney disease.
Short name
24-Hour Urine Glucose
Frequently asked questions
How is this test different from a standard blood glucose test?
What causes high urinary glucose levels?
Can I drink fluids before or during the 24-hour urine collection?
Sources
- 1
- 2Lab Tests OnlineSource
- 3
Click any link to access the full source. PubMed Central (PMC) links provide free full-text access.
This information is for educational purposes only and is not a substitute for professional medical advice, diagnosis, or treatment.
This content is for general informational and educational purposes only and is not a substitute for professional medical advice, diagnosis, or treatment. Always seek the guidance of a qualified healthcare provider with any questions you have about a medical condition, and never disregard professional medical advice or delay seeking it because of something you read here.
If you think you may have a medical emergency, call your local emergency number or go to the nearest emergency department immediately.
Medically reviewed by WellAlly Editorial Team Last reviewed August 16, 2026. · Read our editorial policy